Effects of electrolyte gating on photoluminescence spectra of large-area WSe2monolayer films
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractWe fabricated electric double-layer transistors comprising large-area WSe2 monolayers and investigated the effects of electrolyte gating on their photoluminescence (PL) spectra. Using the efficient gating effects of electric double layers, we succeeded in the application of a large electric field (>107Vcm%1) and the accumulation of high carrier density (>1013cm%2). As a result, we observed PL spectra based on both positively and negatively charged excitons and their gate-voltage-dependent redshifts, suggesting the effects of both an electric field and charge accumulation. © 2016 The Japan Society of Applied Physics.
CitationMatsuki K, Pu J, Kozawa D, Matsuda K, Li L-J, et al. (2016) Effects of electrolyte gating on photoluminescence spectra of large-area WSe2monolayer films. Japanese Journal of Applied Physics 55: 06GB02. Available: http://dx.doi.org/10.7567/JJAP.55.06GB02.
PublisherJapan Society of Applied Physics